Timeline for $7n=x^2+2y^2+4z^2$ with or without $x^2\equiv y^2\equiv z^2\pmod 7$
Current License: CC BY-SA 4.0
3 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Oct 22, 2020 at 0:07 | answer | added | user125345 | timeline score: 1 | |
| Oct 21, 2020 at 13:30 | comment | added | Zhi-Wei Sun | Note that $1^2+2\times3^2+4\times2^2=35\equiv0\pmod 7$. | |
| Oct 21, 2020 at 13:06 | history | asked | Zhi-Wei Sun | CC BY-SA 4.0 |